Permeability determinations from nuclear magnetic resonance...

Electricity: measuring and testing – Particle precession resonance – Using well logging device

Reexamination Certificate

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C324S300000

Reexamination Certificate

active

11299985

ABSTRACT:
Permeability determinations are made from NMR measurements of a logging tool. The NMR measurements are used to find an observed critical spin—spin relaxation time which is used in conjunction with an in situ determination of surface relaxivity of a rock in order to generate permeability determinations.

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